Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.yaml

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 # Copyright (C) 2020 Renesas Electronics Corp.
   3 %YAML 1.2
   4 ---
   5 $id: http://devicetree.org/schemas/thermal/rcar-gen3-thermal.yaml#
   6 $schema: http://devicetree.org/meta-schemas/core.yaml#
   7
   8 title: Renesas R-Car Gen3 Thermal Sensor
   9
  10 description:
  11   On R-Car Gen3 SoCs, the thermal sensor controllers (TSC) control the thermal
  12   sensors (THS) which are the analog circuits for measuring temperature (Tj)
  13   inside the LSI.
  14
  15 maintainers:
  16   - Niklas Söderlund <niklas.soderlund@ragnatech.se>
  17
  18 properties:
  19   compatible:
  20     enum:
  21       - renesas,r8a774a1-thermal # RZ/G2M
  22       - renesas,r8a774b1-thermal # RZ/G2N
  23       - renesas,r8a774e1-thermal # RZ/G2H
  24       - renesas,r8a7795-thermal  # R-Car H3
  25       - renesas,r8a7796-thermal  # R-Car M3-W
  26       - renesas,r8a77961-thermal # R-Car M3-W+
  27       - renesas,r8a77965-thermal # R-Car M3-N
  28       - renesas,r8a77980-thermal # R-Car V3H
  29   reg:
  30     minItems: 2
  31     maxItems: 3
  32     items:
  33       - description: TSC1 registers
  34       - description: TSC2 registers
  35       - description: TSC3 registers
  36
  37   interrupts:
  38     items:
  39       - description: TEMP1 interrupt
  40       - description: TEMP2 interrupt
  41       - description: TEMP3 interrupt
  42
  43   clocks:
  44     maxItems: 1
  45
  46   power-domains:
  47     maxItems: 1
  48
  49   resets:
  50     maxItems: 1
  51
  52   "#thermal-sensor-cells":
  53     const: 1
  54
  55 required:
  56   - compatible
  57   - reg
  58   - interrupts
  59   - clocks
  60   - power-domains
  61   - resets
  62   - "#thermal-sensor-cells"
  63
  64 additionalProperties: false
  65
  66 examples:
  67   - |
  68     #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
  69     #include <dt-bindings/interrupt-controller/arm-gic.h>
  70     #include <dt-bindings/power/r8a7795-sysc.h>
  71
  72     tsc: thermal@e6198000 {
  73             compatible = "renesas,r8a7795-thermal";
  74             reg = <0xe6198000 0x100>,
  75                   <0xe61a0000 0x100>,
  76                   <0xe61a8000 0x100>;
  77             interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
  78                          <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
  79                          <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
  80             clocks = <&cpg CPG_MOD 522>;
  81             power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
  82             resets = <&cpg 522>;
  83             #thermal-sensor-cells = <1>;
  84     };
  85
  86     thermal-zones {
  87             sensor_thermal: sensor-thermal {
  88                     polling-delay-passive = <250>;
  89                     polling-delay = <1000>;
  90                     thermal-sensors = <&tsc 0>;
  91
  92                     trips {
  93                             sensor1_crit: sensor1-crit {
  94                                     temperature = <90000>;
  95                                     hysteresis = <2000>;
  96                                     type = "critical";
  97                             };
  98                     };
  99             };
 100     };